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ICD-10 Guide
ICD-10 CodesC44.219

C44.219

Billable

Basal cell carcinoma of skin of left ear and external auricular canal

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 C44.219 is a billable code used to indicate a diagnosis of basal cell carcinoma of skin of left ear and external auricular canal.

Key Diagnostic Point:

Basal cell carcinoma (BCC) is the most common form of skin cancer, arising from the basal cells in the epidermis. This specific code, C44.219, refers to BCC located on the skin of the left ear and the external auricular canal. BCC is typically associated with prolonged sun exposure, making it prevalent in individuals with fair skin, a history of sunburns, or those who frequently engage in outdoor activities without adequate sun protection. Clinically, BCC may present as a pearly or waxy bump, a flat, flesh-colored lesion, or a scar-like area. Surgical excision is the primary treatment, with the goal of achieving clear surgical margins to minimize recurrence. Reconstruction may be necessary depending on the size and location of the tumor, particularly in cosmetically sensitive areas like the ear. Post-operative care and follow-up are essential to monitor for any signs of recurrence or complications. Accurate coding for BCC is crucial for appropriate treatment planning and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Specificity of location (left ear and external auricular canal)
  • Need for detailed documentation of surgical margins
  • Potential for reconstruction procedures
  • Differentiation from other skin cancers

Audit Risk Factors

  • Inadequate documentation of surgical margins
  • Failure to specify the exact location of the carcinoma
  • Improper coding of reconstruction procedures
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Dermatology

Documentation Requirements

Detailed descriptions of the lesion, size, location, and treatment plan.

Common Clinical Scenarios

Diagnosis and treatment of BCC, Mohs micrographic surgery, and follow-up care.

Billing Considerations

Ensure clear documentation of margins and any reconstructive procedures performed.

Otolaryngology

Documentation Requirements

Comprehensive notes on the surgical approach, reconstruction details, and post-operative care.

Common Clinical Scenarios

Surgical excision of BCC from the ear, management of complications, and aesthetic reconstruction.

Billing Considerations

Focus on the functional and cosmetic outcomes of ear reconstruction.

Coding Guidelines

Inclusion Criteria

Use C44.219 When
  • Follow ICD
  • CM guidelines for coding skin cancers, ensuring accurate documentation of the site, type, and treatment
  • Include details on surgical margins and any reconstructive procedures performed

Exclusion Criteria

Do NOT use C44.219 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

17311CPT Code

Mohs micrographic surgery

Clinical Scenario

Used for excision of BCC on the left ear.

Documentation Requirements

Document the size of the lesion and margins.

Specialty Considerations

Dermatologists should ensure detailed operative notes.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of skin cancers, improving the accuracy of diagnoses and treatment plans. C44.219 provides detailed information that aids in patient management and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of skin cancers, improving the accuracy of diagnoses and treatment plans. C44.219 provides detailed information that aids in patient management and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    American Academy of Dermatology

Coding & Billing References

  • •
    American Academy of Dermatology

Frequently Asked Questions

What is the primary treatment for basal cell carcinoma?

The primary treatment for basal cell carcinoma is surgical excision, often using Mohs micrographic surgery for optimal margin control.